William h



(No Model.) I W. H. GRIFFITH.

CHAIN LINK.

No. 590,480. Patented Sept. 21,1897.

A TTOBNE YS.

UNITED STATES PATENT OFFICE.

IVILLIAM II. GRIFFITH, OF NEIV YORK, N. Y.

CHAIN-LINK.

SPECIFICATION forming part of Letters Patent N 0. 590,480, datedSeptember 21, 1897.

Application filed. July 2, 1897. Serial No. 643,194. (No model.)

To aZZ whom it may concern:

Be it known that 1, WILLIAM H. GRIFFITH, of New York, in the county ofNew York and State of New York, have invented a new and usefulImprovement in Ohain-Links,of which the following is a specification.

My invention is in the nature of an improved link of a simple ellipticalpattern bent out of a single piece of wire without welding the ends andpossessing great strength, compactness, and durability; and it consistsof a double link having parallel folds with the ends crossed andinterlocked at one end of the link, as hereinafter more fully described.

Figure 1 is a side View of the link. Fig. 1 is an edge view from theleft-hand side of Fig. 1, and Fig. 1 is an end View from the top ofFig. 1. Figs. 2, 2, and 2 are similar views of a modification. Figs. 3,3, and 3 are similar views of a further modification, and Figs. 4, r,and 4 are similar views of a still further modification.

Referring to Figs. 1, 1, and 1 the link is made of a single piece ofwire and is formed with two parallel elliptical convolutions a a and Z)6 which lie flat against and exactly coincide with each other. At oneend d of the link there are two fiat and parallel bends, while at theother end there is an oblique bend c and within this oblique bend thereare interlocked the ends a and b of the wire, which cross each other andform a sort of fork, within which lies the oblique portion 0, whichconstitutes the middle of the piece of wire.

Taking a piece of wire of the proper length after being formed into alink the wire extends as follows: Beginning in the middle at citdescends on obliquely opposite sides at a and b forms the parallel lowerbends d, and then rising on obliquely opposite sides a b it terminatesbeneath the middle and oblique portion 0 with crossed and interlockedends a b.

In Figs. 2, 2, and 2 the ends a b of the wire extend past each other inan opposite direction to Fig. 1, and these ends are notinterlocked witheach other, but merely cross each other to form a fork to receive theoblique loop 0.

In Figs. 3, 3, and 3 a complete convolution is formed in the middle at cc, forming an eye showing two oblique wraps in said view, as in Fig. 3,and into this eye the ends a and b are entered side by'side fromopposite sides of the link and are then pinched or constricted and heldby the coils of the eye. With this form when the tensile strain isapplied it comes upon the inner wrap of the eye, and thus is made topinch and hold the imprisoned ends a and Z) all the tighter.

In Figs. 4, l, and 4* the ends of the wire instead of crossing eachother and stopping inside the end of the link, as in Figs. 2, 2, and 2said ends in this modification after crossing each other beneath theoblique bend c are extended upwardly and outwardly and around theportionc, so as to embrace it.

In all these forms of links the portion of the link where the ends ofthe wire are secured is designed to be swedged or dropforged in suitabledies to compact this end of the link and make it in thicknesspractically uniform with the other parts and also to more firmly connectthe ends against coming loose.

Having thus described my invention,what I claim as new, and desiretosecure by Letters Patent, is

1. A link made of a single piece of wire bent to form two coincidingloops arranged side by side and parallel to each other the middleportion of the wire being arranged oblique to the loops, and the freeends of the wire being extended past each other within the obliquemiddle portion substantially as and for the purpose described.

2. A link made'of a single piece of wire bent to form two coincidingloops arranged side by side and parallel to each other, the middleport-ion of the wire being arranged oblique to the loops, and the freeends of the wire being arranged to cross each other within the obliquemiddle portion and form a fork or seat for the same substantially as andfor the purpose described.

' WILLIAM H. GRIFFITH.

\Vitnesses:

EDWD. W. BY N, SoLoN O. KEMON.

